<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
/**
 * CodeIgniter
 *
 * An open source application development framework for PHP 4.3.2 or newer
 *
 * @package		CodeIgniter
 * @author		ExpressionEngine Dev Team
 * @copyright	Copyright (c) 2008 - 2009, EllisLab, Inc.
 * @license		http://codeigniter.com/user_guide/license.html
 * @link		http://codeigniter.com
 * @since		Version 1.0
 * @filesource
 */

// ------------------------------------------------------------------------

/**
 * Loader Class
 *
 * Loads views and files
 *
 * @package		CodeIgniter
 * @subpackage	Libraries
 * @author		ExpressionEngine Dev Team
 * @category	Loader
 * @link		http://codeigniter.com/user_guide/libraries/loader.html
 */
class CI_Loader {

// All these are set automatically. Don't mess with them.
  var $_ci_ob_level;
  var $_ci_view_path		= '';
  var $_ci_is_php5		= FALSE;
  var $_ci_is_instance 	= FALSE; // Whether we should use $this or $CI =& get_instance()
  var $_ci_cached_vars	= array();
  var $_ci_classes		= array();
  var $_ci_loaded_files	= array();
  var $_ci_models			= array();
  var $_ci_helpers		= array();
  var $_ci_plugins		= array();
  var $_ci_varmap			= array('unit_test' => 'unit', 'user_agent' => 'agent');


  /**
   * Constructor
   *
   * Sets the path to the view files and gets the initial output buffering level
   *
   * @access	public
   */
  function CI_Loader() {
    $this->_ci_is_php5 = (floor(phpversion()) >= 5) ? TRUE : FALSE;
    $this->_ci_view_path = APPPATH.'views/';
    $this->_ci_ob_level  = ob_get_level();

    log_message('debug', "Loader Class Initialized");
  }

  // --------------------------------------------------------------------

  /**
   * Class Loader
   *
   * This function lets users load and instantiate classes.
   * It is designed to be called from a user's app controllers.
   *
   * @access	public
   * @param	string	the name of the class
   * @param	mixed	the optional parameters
   * @param	string	an optional object name
   * @return	void
   */
  function library($library = '', $params = NULL, $object_name = NULL) {
    if ($library == '') {
      return FALSE;
    }

    if ( ! is_null($params) AND ! is_array($params)) {
      $params = NULL;
    }

    if (is_array($library)) {
      foreach ($library as $class) {
        $this->_ci_load_class($class, $params, $object_name);
      }
    }
    else {
      $this->_ci_load_class($library, $params, $object_name);
    }

    $this->_ci_assign_to_models();
  }

  // --------------------------------------------------------------------

  /**
   * Model Loader
   *
   * This function lets users load and instantiate models.
   *
   * @access	public
   * @param	string	the name of the class
   * @param	string	name for the model
   * @param	bool	database connection
   * @return	void
   */
  function model($model, $name = '', $db_conn = FALSE) {
    if (is_array($model)) {
      foreach($model as $babe) {
        $this->model($babe);
      }
      return;
    }

    if ($model == '') {
      return;
    }

    // Is the model in a sub-folder? If so, parse out the filename and path.
    if (strpos($model, '/') === FALSE) {
      $path = '';
    }
    else {
      $x = explode('/', $model);
      $model = end($x);
      unset($x[count($x)-1]);
      $path = implode('/', $x).'/';
    }

    if ($name == '') {
      $name = $model;
    }

    if (in_array($name, $this->_ci_models, TRUE)) {
      return;
    }

    $CI =& get_instance();
    if (isset($CI->$name)) {
      show_error('The model name you are loading is the name of a resource that is already being used: '.$name);
    }

    $model = strtolower($model);

    if ( ! file_exists(APPPATH.'models/'.$path.$model.EXT)) {
      show_error('Unable to locate the model you have specified: '.$model);
    }

    if ($db_conn !== FALSE AND ! class_exists('CI_DB')) {
      if ($db_conn === TRUE)
        $db_conn = '';

      $CI->load->database($db_conn, FALSE, TRUE);
    }

    if ( ! class_exists('Model')) {
      load_class('Model', FALSE);
    }

    require_once(APPPATH.'models/'.$path.$model.EXT);

    $model = ucfirst($model);

    $CI->$name = new $model();
    $CI->$name->_assign_libraries();

    $this->_ci_models[] = $name;
  }

  // --------------------------------------------------------------------

  /**
   * Database Loader
   *
   * @access	public
   * @param	string	the DB credentials
   * @param	bool	whether to return the DB object
   * @param	bool	whether to enable active record (this allows us to override the config setting)
   * @return	object
   */
  function database($params = '', $return = FALSE, $active_record = FALSE) {
  // Grab the super object
    $CI =& get_instance();

    // Do we even need to load the database class?
    if (class_exists('CI_DB') AND $return == FALSE AND $active_record == FALSE AND isset($CI->db) AND is_object($CI->db)) {
      return FALSE;
    }

    require_once(BASEPATH.'database/DB'.EXT);

    if ($return === TRUE) {
      return DB($params, $active_record);
    }

    // Initialize the db variable.  Needed to prevent
    // reference errors with some configurations
    $CI->db = '';

    // Load the DB class
    $CI->db =& DB($params, $active_record);

    // Assign the DB object to any existing models
    $this->_ci_assign_to_models();
  }

  // --------------------------------------------------------------------

  /**
   * Load the Utilities Class
   *
   * @access	public
   * @return	string
   */
  function dbutil() {
    if ( ! class_exists('CI_DB')) {
      $this->database();
    }

    $CI =& get_instance();

    // for backwards compatibility, load dbforge so we can extend dbutils off it
    // this use is deprecated and strongly discouraged
    $CI->load->dbforge();

    require_once(BASEPATH.'database/DB_utility'.EXT);
    require_once(BASEPATH.'database/drivers/'.$CI->db->dbdriver.'/'.$CI->db->dbdriver.'_utility'.EXT);
    $class = 'CI_DB_'.$CI->db->dbdriver.'_utility';

    $CI->dbutil =& instantiate_class(new $class());

    $CI->load->_ci_assign_to_models();
  }

  // --------------------------------------------------------------------

  /**
   * Load the Database Forge Class
   *
   * @access	public
   * @return	string
   */
  function dbforge() {
    if ( ! class_exists('CI_DB')) {
      $this->database();
    }

    $CI =& get_instance();

    require_once(BASEPATH.'database/DB_forge'.EXT);
    require_once(BASEPATH.'database/drivers/'.$CI->db->dbdriver.'/'.$CI->db->dbdriver.'_forge'.EXT);
    $class = 'CI_DB_'.$CI->db->dbdriver.'_forge';

    $CI->dbforge = new $class();

    $CI->load->_ci_assign_to_models();
  }

  // --------------------------------------------------------------------

  /**
   * Load View
   *
   * This function is used to load a "view" file.  It has three parameters:
   *
   * 1. The name of the "view" file to be included.
   * 2. An associative array of data to be extracted for use in the view.
   * 3. TRUE/FALSE - whether to return the data or load it.  In
   * some cases it's advantageous to be able to return data so that
   * a developer can process it in some way.
   *
   * @access	public
   * @param	string
   * @param	array
   * @param	bool
   * @return	void
   */
  function view($view, $vars = array(), $return = FALSE) {
    return $this->_ci_load(array('_ci_view' => $view, '_ci_vars' => $this->_ci_object_to_array($vars), '_ci_return' => $return));
  }

  // --------------------------------------------------------------------

  /**
   * Load File
   *
   * This is a generic file loader
   *
   * @access	public
   * @param	string
   * @param	bool
   * @return	string
   */
  function file($path, $return = FALSE) {
    return $this->_ci_load(array('_ci_path' => $path, '_ci_return' => $return));
  }

  // --------------------------------------------------------------------

  /**
   * Set Variables
   *
   * Once variables are set they become available within
   * the controller class and its "view" files.
   *
   * @access	public
   * @param	array
   * @return	void
   */
  function vars($vars = array(), $val = '') {
    if ($val != '' AND is_string($vars)) {
      $vars = array($vars => $val);
    }

    $vars = $this->_ci_object_to_array($vars);

    if (is_array($vars) AND count($vars) > 0) {
      foreach ($vars as $key => $val) {
        $this->_ci_cached_vars[$key] = $val;
      }
    }
  }

  // --------------------------------------------------------------------

  /**
   * Load Helper
   *
   * This function loads the specified helper file.
   *
   * @access	public
   * @param	mixed
   * @return	void
   */
  function helper($helpers = array()) {
    if ( ! is_array($helpers)) {
      $helpers = array($helpers);
    }

    foreach ($helpers as $helper) {
      $helper = strtolower(str_replace(EXT, '', str_replace('_helper', '', $helper)).'_helper');

      if (isset($this->_ci_helpers[$helper])) {
        continue;
      }

      $ext_helper = APPPATH.'helpers/'.config_item('subclass_prefix').$helper.EXT;

      // Is this a helper extension request?
      if (file_exists($ext_helper)) {
        $base_helper = BASEPATH.'helpers/'.$helper.EXT;

        if ( ! file_exists($base_helper)) {
          show_error('Unable to load the requested file: helpers/'.$helper.EXT);
        }

        include_once($ext_helper);
        include_once($base_helper);
      }
      elseif (file_exists(APPPATH.'helpers/'.$helper.EXT)) {
        include_once(APPPATH.'helpers/'.$helper.EXT);
      }
      else {
        if (file_exists(BASEPATH.'helpers/'.$helper.EXT)) {
          include_once(BASEPATH.'helpers/'.$helper.EXT);
        }
        else {
          show_error('Unable to load the requested file: helpers/'.$helper.EXT);
        }
      }

      $this->_ci_helpers[$helper] = TRUE;
      log_message('debug', 'Helper loaded: '.$helper);
    }
  }

  // --------------------------------------------------------------------

  /**
   * Load Helpers
   *
   * This is simply an alias to the above function in case the
   * user has written the plural form of this function.
   *
   * @access	public
   * @param	array
   * @return	void
   */
  function helpers($helpers = array()) {
    $this->helper($helpers);
  }

  // --------------------------------------------------------------------

  /**
   * Load Plugin
   *
   * This function loads the specified plugin.
   *
   * @access	public
   * @param	array
   * @return	void
   */
  function plugin($plugins = array()) {
    if ( ! is_array($plugins)) {
      $plugins = array($plugins);
    }

    foreach ($plugins as $plugin) {
      $plugin = strtolower(str_replace(EXT, '', str_replace('_pi', '', $plugin)).'_pi');

      if (isset($this->_ci_plugins[$plugin])) {
        continue;
      }

      if (file_exists(APPPATH.'plugins/'.$plugin.EXT)) {
        include_once(APPPATH.'plugins/'.$plugin.EXT);
      }
      else {
        if (file_exists(BASEPATH.'plugins/'.$plugin.EXT)) {
          include_once(BASEPATH.'plugins/'.$plugin.EXT);
        }
        else {
          show_error('Unable to load the requested file: plugins/'.$plugin.EXT);
        }
      }

      $this->_ci_plugins[$plugin] = TRUE;
      log_message('debug', 'Plugin loaded: '.$plugin);
    }
  }

  // --------------------------------------------------------------------

  /**
   * Load Plugins
   *
   * This is simply an alias to the above function in case the
   * user has written the plural form of this function.
   *
   * @access	public
   * @param	array
   * @return	void
   */
  function plugins($plugins = array()) {
    $this->plugin($plugins);
  }

  // --------------------------------------------------------------------

  /**
   * Loads a language file
   *
   * @access	public
   * @param	array
   * @param	string
   * @return	void
   */
  function language($file = array(), $lang = '') {
    $CI =& get_instance();

    if ( ! is_array($file)) {
      $file = array($file);
    }

    foreach ($file as $langfile) {
      $CI->lang->load($langfile, $lang);
    }
  }

  /**
   * Loads language files for scaffolding
   *
   * @access	public
   * @param	string
   * @return	arra
   */
  function scaffold_language($file = '', $lang = '', $return = FALSE) {
    $CI =& get_instance();
    return $CI->lang->load($file, $lang, $return);
  }

  // --------------------------------------------------------------------

  /**
   * Loads a config file
   *
   * @access	public
   * @param	string
   * @return	void
   */
  function config($file = '', $use_sections = FALSE, $fail_gracefully = FALSE) {
    $CI =& get_instance();
    $CI->config->load($file, $use_sections, $fail_gracefully);
  }

  // --------------------------------------------------------------------

  /**
   * Scaffolding Loader
   *
   * This initializing function works a bit different than the
   * others. It doesn't load the class.  Instead, it simply
   * sets a flag indicating that scaffolding is allowed to be
   * used.  The actual scaffolding function below is
   * called by the front controller based on whether the
   * second segment of the URL matches the "secret" scaffolding
   * word stored in the application/config/routes.php
   *
   * @access	public
   * @param	string
   * @return	void
   */
  function scaffolding($table = '') {
    if ($table === FALSE) {
      show_error('You must include the name of the table you would like to access when you initialize scaffolding');
    }

    $CI =& get_instance();
    $CI->_ci_scaffolding = TRUE;
    $CI->_ci_scaff_table = $table;
  }

  // --------------------------------------------------------------------

  /**
   * Loader
   *
   * This function is used to load views and files.
   * Variables are prefixed with _ci_ to avoid symbol collision with
   * variables made available to view files
   *
   * @access	private
   * @param	array
   * @return	void
   */
  function _ci_load($_ci_data) {
  // Set the default data variables
    foreach (array('_ci_view', '_ci_vars', '_ci_path', '_ci_return') as $_ci_val) {
      $$_ci_val = ( ! isset($_ci_data[$_ci_val])) ? FALSE : $_ci_data[$_ci_val];
    }

    // Set the path to the requested file
    if ($_ci_path == '') {
      $_ci_ext = pathinfo($_ci_view, PATHINFO_EXTENSION);
      $_ci_file = ($_ci_ext == '') ? $_ci_view.EXT : $_ci_view;
      $_ci_path = $this->_ci_view_path.$_ci_file;
    }
    else {
      $_ci_x = explode('/', $_ci_path);
      $_ci_file = end($_ci_x);
    }

    if ( ! file_exists($_ci_path)) {
      show_error('Unable to load the requested file: '.$_ci_file);
    }

    // This allows anything loaded using $this->load (views, files, etc.)
    // to become accessible from within the Controller and Model functions.
    // Only needed when running PHP 5

    if ($this->_ci_is_instance()) {
      $_ci_CI =& get_instance();
      foreach (get_object_vars($_ci_CI) as $_ci_key => $_ci_var) {
        if ( ! isset($this->$_ci_key)) {
          $this->$_ci_key =& $_ci_CI->$_ci_key;
        }
      }
    }

    /*
     * Extract and cache variables
     *
     * You can either set variables using the dedicated $this->load_vars()
     * function or via the second parameter of this function. We'll merge
     * the two types and cache them so that views that are embedded within
     * other views can have access to these variables.
     */
    if (is_array($_ci_vars)) {
      $this->_ci_cached_vars = array_merge($this->_ci_cached_vars, $_ci_vars);
    }
    extract($this->_ci_cached_vars);

    /*
     * Buffer the output
     *
     * We buffer the output for two reasons:
     * 1. Speed. You get a significant speed boost.
     * 2. So that the final rendered template can be
     * post-processed by the output class.  Why do we
     * need post processing?  For one thing, in order to
     * show the elapsed page load time.  Unless we
     * can intercept the content right before it's sent to
     * the browser and then stop the timer it won't be accurate.
     */
    ob_start();

    // If the PHP installation does not support short tags we'll
    // do a little string replacement, changing the short tags
    // to standard PHP echo statements.

    if ((bool) @ini_get('short_open_tag') === FALSE AND config_item('rewrite_short_tags') == TRUE) {
      echo eval('?>'.preg_replace("/;*\s*\?>/", "; ?>", str_replace('<?=', '<?php echo ', file_get_contents($_ci_path))));
    }
    else {
      include($_ci_path); // include() vs include_once() allows for multiple views with the same name
    }

    log_message('debug', 'File loaded: '.$_ci_path);

    // Return the file data if requested
    if ($_ci_return === TRUE) {
      $buffer = ob_get_contents();
      @ob_end_clean();
      return $buffer;
    }

    /*
     * Flush the buffer... or buff the flusher?
     *
     * In order to permit views to be nested within
     * other views, we need to flush the content back out whenever
     * we are beyond the first level of output buffering so that
     * it can be seen and included properly by the first included
     * template and any subsequent ones. Oy!
     *
     */
    if (ob_get_level() > $this->_ci_ob_level + 1) {
      ob_end_flush();
    }
    else {
    // PHP 4 requires that we use a global
      global $OUT;
      $OUT->append_output(ob_get_contents());
      @ob_end_clean();
    }
  }

  // --------------------------------------------------------------------

  /**
   * Load class
   *
   * This function loads the requested class.
   *
   * @access	private
   * @param 	string	the item that is being loaded
   * @param	mixed	any additional parameters
   * @param	string	an optional object name
   * @return 	void
   */
  function _ci_load_class($class, $params = NULL, $object_name = NULL) {
  // Get the class name, and while we're at it trim any slashes.
  // The directory path can be included as part of the class name,
  // but we don't want a leading slash
    $class = str_replace(EXT, '', trim($class, '/'));

    // Was the path included with the class name?
    // We look for a slash to determine this
    $subdir = '';
    if (strpos($class, '/') !== FALSE) {
    // explode the path so we can separate the filename from the path
      $x = explode('/', $class);

      // Reset the $class variable now that we know the actual filename
      $class = end($x);

      // Kill the filename from the array
      unset($x[count($x)-1]);

      // Glue the path back together, sans filename
      $subdir = implode($x, '/').'/';
    }

    // We'll test for both lowercase and capitalized versions of the file name
    foreach (array(ucfirst($class), strtolower($class)) as $class) {
      $subclass = APPPATH.'libraries/'.$subdir.config_item('subclass_prefix').$class.EXT;

      // Is this a class extension request?
      if (file_exists($subclass)) {
        $baseclass = BASEPATH.'libraries/'.ucfirst($class).EXT;

        if ( ! file_exists($baseclass)) {
          log_message('error', "Unable to load the requested class: ".$class);
          show_error("Unable to load the requested class: ".$class);
        }

        // Safety:  Was the class already loaded by a previous call?
        if (in_array($subclass, $this->_ci_loaded_files)) {
        // Before we deem this to be a duplicate request, let's see
        // if a custom object name is being supplied.  If so, we'll
        // return a new instance of the object
          if ( ! is_null($object_name)) {
            $CI =& get_instance();
            if ( ! isset($CI->$object_name)) {
              return $this->_ci_init_class($class, config_item('subclass_prefix'), $params, $object_name);
            }
          }

          $is_duplicate = TRUE;
          log_message('debug', $class." class already loaded. Second attempt ignored.");
          return;
        }

        include_once($baseclass);
        include_once($subclass);
        $this->_ci_loaded_files[] = $subclass;

        return $this->_ci_init_class($class, config_item('subclass_prefix'), $params, $object_name);
      }

      // Lets search for the requested library file and load it.
      $is_duplicate = FALSE;
      for ($i = 1; $i < 3; $i++) {
        $path = ($i % 2) ? APPPATH : BASEPATH;
        $filepath = $path.'libraries/'.$subdir.$class.EXT;

        // Does the file exist?  No?  Bummer...
        if ( ! file_exists($filepath)) {
          continue;
        }

        // Safety:  Was the class already loaded by a previous call?
        if (in_array($filepath, $this->_ci_loaded_files)) {
        // Before we deem this to be a duplicate request, let's see
        // if a custom object name is being supplied.  If so, we'll
        // return a new instance of the object
          if ( ! is_null($object_name)) {
            $CI =& get_instance();
            if ( ! isset($CI->$object_name)) {
              return $this->_ci_init_class($class, '', $params, $object_name);
            }
          }

          $is_duplicate = TRUE;
          log_message('debug', $class." class already loaded. Second attempt ignored.");
          return;
        }

        include_once($filepath);
        $this->_ci_loaded_files[] = $filepath;
        return $this->_ci_init_class($class, '', $params, $object_name);
      }
    } // END FOREACH

    // One last attempt.  Maybe the library is in a subdirectory, but it wasn't specified?
    if ($subdir == '') {
      $path = strtolower($class).'/'.$class;
      return $this->_ci_load_class($path, $params);
    }

    // If we got this far we were unable to find the requested class.
    // We do not issue errors if the load call failed due to a duplicate request
    if ($is_duplicate == FALSE) {
      log_message('error', "Unable to load the requested class: ".$class);
      show_error("Unable to load the requested class: ".$class);
    }
  }

  // --------------------------------------------------------------------

  /**
   * Instantiates a class
   *
   * @access	private
   * @param	string
   * @param	string
   * @param	string	an optional object name
   * @return	null
   */
  function _ci_init_class($class, $prefix = '', $config = FALSE, $object_name = NULL) {
  // Is there an associated config file for this class?
    if ($config === NULL) {
    // We test for both uppercase and lowercase, for servers that
    // are case-sensitive with regard to file names
      if (file_exists(APPPATH.'config/'.strtolower($class).EXT)) {
        include_once(APPPATH.'config/'.strtolower($class).EXT);
      }
      elseif (file_exists(APPPATH.'config/'.ucfirst(strtolower($class)).EXT)) {
        include_once(APPPATH.'config/'.ucfirst(strtolower($class)).EXT);
      }
    }

    if ($prefix == '') {
      if (class_exists('CI_'.$class)) {
        $name = 'CI_'.$class;
      }
      elseif (class_exists(config_item('subclass_prefix').$class)) {
        $name = config_item('subclass_prefix').$class;
      }
      else {
        $name = $class;
      }
    }
    else {
      $name = $prefix.$class;
    }

    // Is the class name valid?
    if ( ! class_exists($name)) {
      log_message('error', "Non-existent class: ".$name);
      show_error("Non-existent class: ".$class);
    }

    // Set the variable name we will assign the class to
    // Was a custom class name supplied?  If so we'll use it
    $class = strtolower($class);

    if (is_null($object_name)) {
      $classvar = ( ! isset($this->_ci_varmap[$class])) ? $class : $this->_ci_varmap[$class];
    }
    else {
      $classvar = $object_name;
    }

    // Save the class name and object name
    $this->_ci_classes[$class] = $classvar;

    // Instantiate the class
    $CI =& get_instance();
    if ($config !== NULL) {
      $CI->$classvar = new $name($config);
    }
    else {
      $CI->$classvar = new $name;
    }
  }

  // --------------------------------------------------------------------

  /**
   * Autoloader
   *
   * The config/autoload.php file contains an array that permits sub-systems,
   * libraries, plugins, and helpers to be loaded automatically.
   *
   * @access	private
   * @param	array
   * @return	void
   */
  function _ci_autoloader() {
    include_once(APPPATH.'config/autoload'.EXT);

    if ( ! isset($autoload)) {
      return FALSE;
    }

    // Load any custom config file
    if (count($autoload['config']) > 0) {
      $CI =& get_instance();
      foreach ($autoload['config'] as $key => $val) {
        $CI->config->load($val);
      }
    }

    // Autoload plugins, helpers and languages
    foreach (array('helper', 'plugin', 'language') as $type) {
      if (isset($autoload[$type]) AND count($autoload[$type]) > 0) {
        $this->$type($autoload[$type]);
      }
    }

    // A little tweak to remain backward compatible
    // The $autoload['core'] item was deprecated
    if ( ! isset($autoload['libraries'])) {
      $autoload['libraries'] = $autoload['core'];
    }

    // Load libraries
    if (isset($autoload['libraries']) AND count($autoload['libraries']) > 0) {
    // Load the database driver.
      if (in_array('database', $autoload['libraries'])) {
        $this->database();
        $autoload['libraries'] = array_diff($autoload['libraries'], array('database'));
      }

      // Load scaffolding
      if (in_array('scaffolding', $autoload['libraries'])) {
        $this->scaffolding();
        $autoload['libraries'] = array_diff($autoload['libraries'], array('scaffolding'));
      }

      // Load all other libraries
      foreach ($autoload['libraries'] as $item) {
        $this->library($item);
      }
    }

    // Autoload models
    if (isset($autoload['model'])) {
      $this->model($autoload['model']);
    }

  }

  // --------------------------------------------------------------------

  /**
   * Assign to Models
   *
   * Makes sure that anything loaded by the loader class (libraries, plugins, etc.)
   * will be available to models, if any exist.
   *
   * @access	private
   * @param	object
   * @return	array
   */
  function _ci_assign_to_models() {
    if (count($this->_ci_models) == 0) {
      return;
    }

    if ($this->_ci_is_instance()) {
      $CI =& get_instance();
      foreach ($this->_ci_models as $model) {
        $CI->$model->_assign_libraries();
      }
    }
    else {
      foreach ($this->_ci_models as $model) {
        $this->$model->_assign_libraries();
      }
    }
  }

  // --------------------------------------------------------------------

  /**
   * Object to Array
   *
   * Takes an object as input and converts the class variables to array key/vals
   *
   * @access	private
   * @param	object
   * @return	array
   */
  function _ci_object_to_array($object) {
    return (is_object($object)) ? get_object_vars($object) : $object;
  }

  // --------------------------------------------------------------------

  /**
   * Determines whether we should use the CI instance or $this
   *
   * @access	private
   * @return	bool
   */
  function _ci_is_instance() {
    if ($this->_ci_is_php5 == TRUE) {
      return TRUE;
    }

    global $CI;
    return (is_object($CI)) ? TRUE : FALSE;
  }

}

/* End of file Loader.php */
/* Location: ./system/libraries/Loader.php */